/* ============================================================================
   project.css — deep-dive project detail pages
   Builds on styles.css tokens. Loaded after styles.css on /projects/*.html
   ========================================================================= */

:root {
  --blue-2: #6ea8ff;  /* lighter blue — AA-safe for small text on near-black */
}

/* --- back link ----------------------------------------------------------- */
.pd-back {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-2);
  padding: 0.4rem 0; transition: color var(--dur-1) var(--ease), gap var(--dur-1) var(--ease);
}
.pd-back:hover { color: var(--magenta); gap: 0.75rem; }
.pd-back span { transition: transform var(--dur-1) var(--ease); }
.pd-back:hover span { transform: translateX(-3px); }

/* --- hero ----------------------------------------------------------------- */
.pd-hero { position: relative; padding-top: calc(var(--nav-h) + clamp(2rem, 6vw, 4.5rem)); padding-bottom: clamp(2.5rem, 6vw, 4rem); }
.pd-hero__eyebrow {
  font-family: var(--font-mono); font-size: var(--fs-small); letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--magenta); display: inline-flex; align-items: center; gap: var(--sp-2);
  margin: 1.2rem 0 1rem;
}
.pd-hero__eyebrow::before { content: ""; width: 1.4rem; height: 1px; background: var(--magenta); opacity: 0.6; }
.pd-hero__title { font-size: clamp(2.2rem, 6vw, 4rem); font-weight: 700; letter-spacing: -0.035em; line-height: 1; max-width: 20ch; }
.pd-hero__lede { margin-top: 1.4rem; max-width: 62ch; font-size: 1.1rem; color: var(--text-1); line-height: 1.6; }
.pd-hero__foot { margin-top: 1rem; max-width: 60ch; font-size: 0.92rem; color: var(--text-2); }
.pd-hero__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 0.8rem; margin-top: 1.6rem; }

.pd-status {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--term-green); border: 1px solid rgba(75,245,160,0.28); border-radius: 99px; padding: 0.35rem 0.8rem;
}
.pd-status .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--term-green); box-shadow: 0 0 0 0 rgba(75,245,160,0.6); animation: ping 2.4s ease-out infinite; }

/* --- scale chips ---------------------------------------------------------- */
.pd-chips { display: flex; flex-wrap: wrap; gap: 0.55rem; margin-top: 1.8rem; }
.pd-chip {
  font-family: var(--font-mono); font-size: 0.78rem; color: var(--text-2);
  background: var(--bg-2); border: 1px solid var(--line); border-radius: 6px; padding: 0.4rem 0.7rem;
}
.pd-chip b { color: var(--blue-2); font-weight: 600; }

/* --- section rhythm ------------------------------------------------------- */
.pd-section { padding-block: clamp(2.8rem, 6vw, 4.5rem); border-top: 1px solid var(--line); }
.pd-section__head { max-width: 68ch; margin-bottom: 2rem; }
.pd-eyebrow {
  font-family: var(--font-mono); font-size: var(--fs-small); letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--text-3); display: block; margin-bottom: 0.8rem;
}
.pd-eyebrow .accent { color: var(--magenta); }
.pd-heading { font-size: var(--fs-h2); letter-spacing: -0.02em; }
.pd-lede { margin-top: 1rem; color: var(--text-2); font-size: 1.05rem; max-width: 64ch; }

/* --- prose / list --------------------------------------------------------- */
.pd-prose { color: var(--text-1); max-width: 68ch; margin-bottom: 1.1rem; line-height: 1.7; }
.pd-prose strong { color: var(--text-0); }
.pd-prose em { color: var(--text-0); font-style: italic; }
.pd-section code, .pd-hero code { font-family: var(--font-mono); font-size: 0.86em; color: var(--blue-2); background: var(--bg-1); border: 1px solid var(--line); border-radius: 4px; padding: 0.1em 0.4em; }
.pd-list { max-width: 68ch; margin-bottom: 1.2rem; }
.pd-list li { position: relative; padding: 0.35rem 0 0.35rem 1.4rem; color: var(--text-2); line-height: 1.5; }
.pd-list li::before { content: "▹"; position: absolute; left: 0; color: var(--magenta); }
.pd-list li strong { color: var(--text-0); }

/* --- subgroup divider ----------------------------------------------------- */
.pd-subgroup { display: flex; align-items: center; gap: 1rem; margin: 2.4rem 0 1.4rem; }
.pd-subgroup__label {
  font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--text-0); font-weight: 600; white-space: nowrap;
}
.pd-subgroup__line { flex: 1; height: 1px; background: var(--line); }

/* --- callout -------------------------------------------------------------- */
.pd-callout {
  border-left: 2px solid var(--ember); background: var(--bg-2);
  border-radius: 0 var(--radius) var(--radius) 0; padding: 1.1rem 1.3rem; margin: 1.4rem 0;
  color: var(--text-1); max-width: 68ch;
}

/* --- feature cards -------------------------------------------------------- */
.pd-features { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }
.pd-feature {
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-2);
  padding: 1.3rem 1.4rem; display: flex; flex-direction: column; gap: 0.5rem;
  transition: transform var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease), background var(--dur-2) var(--ease);
}
.pd-feature:hover { transform: translateY(-3px); border-color: var(--line-loud); background: var(--bg-3); }
.pd-feature__name { font-size: 1.05rem; display: flex; align-items: baseline; gap: 0.6rem; flex-wrap: wrap; }
.pd-feature__tag {
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.04em; color: var(--blue-2);
  background: var(--blue-soft); border-radius: 4px; padding: 0.15rem 0.45rem; font-weight: 500;
}
.pd-feature__desc { color: var(--text-2); font-size: 0.92rem; line-height: 1.55; }
.pd-feature__tech { font-family: var(--font-mono); font-size: 0.74rem; color: var(--text-3); line-height: 1.5; margin-top: auto; padding-top: 0.5rem; }

/* --- steps / pipeline ----------------------------------------------------- */
.pd-steps { display: grid; gap: 0.7rem; counter-reset: pdstep; max-width: 74ch; }
.pd-step { display: flex; gap: 0.9rem; align-items: flex-start; border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-2); padding: 1rem 1.2rem; }
.pd-step__n {
  flex: none; width: 1.8rem; height: 1.8rem; display: inline-grid; place-items: center;
  font-family: var(--font-mono); font-size: 0.8rem; border-radius: 6px;
  background: var(--bg-4); color: var(--blue-2); border: 1px solid var(--line-loud);
}
.pd-step__body { min-width: 0; }
.pd-step__title { color: var(--text-0); font-weight: 600; font-size: 0.98rem; }
.pd-step__desc { color: var(--text-2); font-size: 0.9rem; margin-top: 0.2rem; line-height: 1.5; }

/* --- stat tiles ----------------------------------------------------------- */
/* separators via per-tile borders (not a gap+bg trick) so empty trailing
   cells in the last row don't render as lighter blocks at odd column counts */
.pd-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.pd-stat { background: var(--bg-2); padding: 1.4rem 1.3rem; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.pd-stat__value { font-family: var(--font-display); font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 700; letter-spacing: -0.03em; line-height: 1; }
.pd-stat:nth-child(3n+1) .pd-stat__value { color: var(--magenta); }
.pd-stat:nth-child(3n+2) .pd-stat__value { color: var(--blue); }
.pd-stat:nth-child(3n+3) .pd-stat__value { color: var(--ember); }
.pd-stat__label { color: var(--text-2); font-size: 0.85rem; margin-top: 0.5rem; line-height: 1.35; }

/* --- tables --------------------------------------------------------------- */
.pd-table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); margin: 0.5rem 0 1rem; }
.pd-table-wrap:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.pd-table { border-collapse: collapse; width: 100%; background: var(--bg-2); }
.pd-table--wide { min-width: 560px; } /* only wide (>3 col) tables force horizontal scroll on phones */
.pd-table caption { text-align: left; font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-3); padding: 0.8rem 1rem 0; caption-side: top; }
.pd-table thead th {
  text-align: left; font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text-3); font-weight: 600; padding: 0.9rem 1rem; border-bottom: 1px solid var(--line-loud); background: var(--bg-3);
}
.pd-table td,
.pd-table th[scope="row"] { padding: 0.85rem 1rem; border-bottom: 1px solid var(--line); vertical-align: top; font-size: 0.9rem; color: var(--text-1); }
.pd-table th[scope="row"] { text-align: left; font-family: var(--font-body); font-weight: 600; color: var(--text-0); }
.pd-table tbody tr:last-child td,
.pd-table tbody tr:last-child th[scope="row"] { border-bottom: 0; }
.pd-table tbody tr:hover td,
.pd-table tbody tr:hover th[scope="row"] { background: var(--bg-3); }

/* --- inter-project nav (bottom) ------------------------------------------- */
.pd-more { border-top: 1px solid var(--line); padding-block: clamp(2.5rem, 6vw, 4rem); }
.pd-more__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; margin-top: 1.4rem; }
.pd-more__card {
  display: flex; flex-direction: column; gap: 0.35rem; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-2); padding: 1.2rem 1.3rem; transition: transform var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease);
}
.pd-more__card:hover { transform: translateY(-3px); border-color: var(--blue); }
.pd-more__k { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-3); }
.pd-more__name { font-size: 1.1rem; color: var(--text-0); font-weight: 600; }
.pd-more__arrow { color: var(--blue-2); font-family: var(--font-mono); font-size: 0.85rem; margin-top: 0.3rem; }

@media (max-width: 720px) {
  .pd-hero__title { font-size: clamp(2rem, 10vw, 3rem); }
}